| # Copyright (C) 2017 Apple Inc. All rights reserved. |
| # Copyright (C) 2016-2017 Michael Saboff. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| # OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| # This parses the legacy FAA NFDC text files APT.txt, AWY.txt, NAV.txt |
| # and FIX.txt into a JavaScript format that he Flight Planner can use. |
| # These text files can be downloaded from the FAA at |
| # https://nfdc.faa.gov/xwiki/bin/view/NFDC/28+Day+NASR+Subscription |
| # This script generates two JavaScript object literal files, one for |
| # waypoints and the other for airways. Both files create maps, where |
| # the key is the waypoint or airway identifier and the value is the |
| # corresponding data. |
| # |
| # Run this file in a directory where APT.txt, AWY.txt, NAV.txt and FIX.txt |
| # are downloaded. |
| |
| import re |
| |
| latLongRE = re.compile('\s*(\d+)-(\d{2})-(\d{2}.\d{3,8})([NS])\s*(\d+)-(\d{2})-(\d{2}.\d{3,8})([EW])') |
| statesAbbreviationsToExclude = ['AK', 'HI'] |
| navaidsToInclude = ['VOR', 'NDB'] |
| airwayFixTypes = frozenset(['CN', 'NDB/DME', 'NDB', 'MIL-REP-PT', 'REP-PT', 'RNAV', 'VOR', 'VOR/DME', 'VORTAC']) |
| airwayTypes = frozenset(['J', 'T', 'Q', 'V']) |
| |
| |
| class WaypointData: |
| def __init__(self): |
| self.waypoints = [] |
| self.allNames = set() |
| |
| def parseLatLongDMS(self, latLongString): |
| match = latLongRE.match(latLongString) |
| latitude = float(match.group(1)) + (float(match.group(2)) * 60 + float(match.group(3))) / 3600 |
| if match.group(4) == 'S': |
| latitude = -latitude |
| |
| longitude = float(match.group(5)) + (float(match.group(6)) * 60 + float(match.group(7))) / 3600 |
| if match.group(8) == 'W': |
| longitude = -longitude |
| |
| return (latitude, longitude) |
| |
| def parseAirportData(self, airportFile): |
| file = open(airportFile, 'r') |
| |
| for line in file: |
| if line[0:3] != 'APT': |
| continue |
| |
| if line[48:50] in statesAbbreviationsToExclude: |
| continue |
| |
| facilityType = line[14:27].rstrip().title() |
| |
| latLong = self.parseLatLongDMS(line[523:538] + line[550:565]) |
| |
| description = line[133:183].rstrip().title() + ' ' + facilityType + ', ' + line[93:133].rstrip().title() + ', ' + line[48:50] |
| description = description.replace('"', '\\"'); |
| |
| name = line[1210:1217].rstrip() |
| if not len(name): |
| name = line[27:31].rstrip() |
| |
| if name in self.allNames: |
| print('Duplicate airport waypoint name {0}'.format(name)) |
| continue |
| |
| self.allNames.add(name) |
| self.waypoints.append((name, facilityType, description, latLong[0], latLong[1])) |
| |
| file.close() |
| |
| def parseNavAidData(self, navaidFile): |
| file = open(navaidFile, 'r') |
| |
| self.ndbs = [] |
| for line in file: |
| if line[0:4] != 'NAV1': |
| continue |
| |
| if line[144:147] == 'AIN': |
| continue |
| |
| if not line[8:11] in navaidsToInclude: |
| continue |
| |
| facilityType = line[8:28].rstrip() |
| |
| latLong = self.parseLatLongDMS(line[371:385] + line[396:410]) |
| |
| name = line[4:8].rstrip() |
| description = line[42:72].rstrip().title() + ' ' + line[8:28].rstrip() |
| |
| # Since NDBs can have the same name as a VOR, we keep track of them separately |
| # and add NDBs below if the NDB has a unique name. |
| if line[8:11] == 'NDB': |
| self.ndbs.append((name, facilityType, description, latLong[0], latLong[1])) |
| else: |
| self.allNames.add(name) |
| self.waypoints.append((name, facilityType, description, latLong[0], latLong[1])) |
| |
| for ndb in self.ndbs: |
| if ndb[0] not in self.allNames: |
| self.allNames.add(ndb[0]) |
| self.waypoints.append(ndb) |
| |
| file.close() |
| |
| def parseFixData(self, fixFile): |
| file = open(fixFile, 'r') |
| |
| for line in file: |
| if line[0:4] != 'FIX1': |
| continue |
| |
| if line[4] < 'A' or line[4] > 'Z': |
| continue |
| |
| facilityType = 'Intersection' |
| |
| latLong = self.parseLatLongDMS(line[66:80] + line[80:94]) |
| |
| name = line[4:34].rstrip() |
| description = name + ' Intersection' |
| |
| if name in self.allNames: |
| print('Duplicate fix name {0}'.format(name)) |
| continue |
| |
| self.allNames.add(name) |
| self.waypoints.append((name, facilityType, description, latLong[0], latLong[1], '')) |
| |
| file.close() |
| |
| def outputWaypointFile(self, outputFilename): |
| sortedWaypoints = sorted(self.waypoints, key=lambda waypoint: waypoint[0]) |
| |
| outputFile = open(outputFilename, 'w+') |
| |
| outputFile.write('var _faaWaypoints = {\n'); |
| isFirst = True |
| for waypoint in sortedWaypoints: |
| if isFirst: |
| isFirst = False |
| else: |
| outputFile.write(',\n'); |
| outputFile.write(' "{0}":{{ "name":"{0}", "type":"{1}", "description":"{2}", "latitude":{3}, "longitude":{4}}}'.format(waypoint[0], waypoint[1], waypoint[2], waypoint[3], waypoint[4])) |
| outputFile.write('\n};\n'); |
| |
| |
| class AirwayData: |
| def __init__(self): |
| self.airways = [] |
| |
| def parseAirwayData(self, airwayFile): |
| file = open(airwayFile, 'r') |
| |
| self.currentAirway = '' |
| self.airwayPoints = [] |
| |
| for line in file: |
| airway = line[4:8].rstrip() |
| if airway != self.currentAirway: |
| if self.currentAirway != '': |
| self.airways.append((self.currentAirway, self.airwayPoints)) |
| self.currentAirway = '' |
| self.airwayPoints = [] |
| |
| if line[0:4] != 'AWY2': |
| continue |
| |
| if line[4] not in airwayTypes: |
| continue |
| |
| if line[9] != ' ': |
| continue |
| |
| if line[45:64].rstrip() not in airwayFixTypes: |
| continue |
| |
| if self.currentAirway == '': |
| self.currentAirway = airway |
| |
| if line[64:79].rstrip() == 'FIX': |
| self.airwayPoints.append(line[15:45].rstrip()) |
| else: |
| self.airwayPoints.append(line[116:120].rstrip()) |
| |
| if self.currentAirway != '': |
| self.airways.append((self.currentAirway, self.airwayPoints)) |
| |
| file.close() |
| |
| def outputAirwayFile(self, outputFilename): |
| sortedAirways = sorted(self.airways, key=lambda airways: airways[0]) |
| |
| outputFile = open(outputFilename, 'w+') |
| |
| outputFile.write('var _faaAirways = {\n'); |
| isFirst = True |
| for airway in sortedAirways: |
| if isFirst: |
| isFirst = False |
| else: |
| outputFile.write(',\n'); |
| outputFile.write(' "{0}":{{ "name":"{0}", "fixes":['.format(airway[0])) |
| isFirstFix = True |
| for fix in airway[1]: |
| if isFirstFix: |
| isFirstFix = False |
| else: |
| outputFile.write(', '); |
| |
| outputFile.write('"{0}"'.format(fix)) |
| outputFile.write(']}') |
| outputFile.write('\n};\n'); |
| |
| |
| def main(): |
| waypoints = WaypointData() |
| waypoints.parseAirportData('APT.txt') |
| waypoints.parseNavAidData('NAV.txt') |
| waypoints.parseFixData('FIX.txt') |
| waypoints.outputWaypointFile('waypoints.js') |
| airways = AirwayData() |
| airways.parseAirwayData('AWY.txt') |
| airways.outputAirwayFile('airways.js') |
| |
| |
| if __name__ == "__main__": |
| main() |
